I just watched this TED talk which was a fantastic introduction to the web site Dollar Street. It is a massive database of images taken from all over the world of people, homes, and the artifacts it their life. Anyone who is thinking about problems or opportunities in a particular area of the world or in a given community would do well to start here and get a rudimentary understanding of how those people live. That is going to provide a lot of valuable context.
An interesting point that seems obvious in retrospect: images don't vary by country but by income level.